Primates captures the fascinating study of several great ape species in the 1960's and 70's. Three women—Jane Goodall, Dian Fossey, and Biruté Galdikas—found their calling and approached their research in very different ways.

Jane Goodall revolutionized animal study with her focus on the chimpanzees in Gombe Stream National Park. She discovered the chimps using tools such as sticks to reach termites, a tasty snack. Before that discovery, the use of tools was thought to be only a human characteristic. Becaue of her work, our definitions have since changed.